Since the donation of a SPECT camera by the International Atomic Energy Agency (IAEA), a busy hospital in Brazil’s city of Niteroi has doubled its capacity to perform heart scans, expanding access to ...

Tracking targeted drug delivery is often a challenge due to limitations in the current imaging techniques. A recent study by ...

BL Lacertae blazar shifts between classifications faster than expected. It shows record X-ray activity and challenges current ...

Since the donation of a SPECT camera by the International Atomic Energy Agency (IAEA), a busy hospital in Brazil's city of Niteroi has doubled its ...

Polaritons are hybrid particles made up of a photon strongly coupled to an electric dipole. Examples of such a dipole include an electron–hole pair in a semiconductor, which forms an exciton ...

The thicker the substance, the more the radiation is absorbed. Alpha, beta and gamma radiations penetrate materials in different ways. Alpha radiation is the least penetrating. It can be stopped ...